Car-wheel and method of manufacture.



G. E. BRYANT. GAB WHEEL AND METHOD 0F HANUFACTUBE.

A rrrrrrrrrr l rn. 111111111111 s.'

924,314. Patented June s, 1909,

.. :55 Il ll iV PATENT oFFIcE.-

UNITED STATES? a fiisjheremvente .reiter e Improvements in 'Car e1 sfn M @Manufactures bleh t" s`pe"cif'catim.''"r `j' r 1.,

It has. been pro osed, heretofore to``i1seaL 4'paper?orcardbiar in'sert,"lilleror separ tor etween the-periphery'of the mainfboldy of a car wheel and'its tir'e to' act as 'alnoise insulater, deadener, or absorber,"wlrereby the noise' o fthe'operation of the car 'Willbe greatly redu ced and will not reach the ears of passengers or others to any great extent.

ave found by' test, however, that in `large and heavy cars it is' difficult to obtain a cardboard or paper insert which possesses a sufficient crushing strength to withstand the strain to which it is subjected.l It has'been customary heretofore. to ipress' these paper or cardboard se arator's or 11ers into'shape and then assemb e the. parts of the wheel, bolting the tire to the center` or main body of the wheel. Difficulty has sometimes been expe# rienced insecuring aperfect fit between the the tire and wheel body, completely filling aperor cardboard and the wheel and/tire. lhave discovered that both of these difticul ties may be overcome vby using a non-resonant metallicller or separator, poured while in a vmolten condition -into the cavity or recess between the wheel body and its tire, thev latter being somewhat heated so that when it cools the metal se arator or lle'r will' have a erfect lit with oth the wheel and tire. ead is es'peciallyiadapted for this use because it is non-resonant or non-resoundin .to aconsiderable degree and is' readily melte at a low temperature. It also has the property of retainin heat'lfor a considerable time so that it flow readily into thecomparatively smalls ace between the tire and'wheel and complete y lill the same. On the accompanying drawmg, forming a part of ths specification, I have illustrated an embodiment'of my' inv ,ntion', and on this drawing-Figure 1 is a .side elevation of one of my improved ca r wheels; Fig. 2 1s an enlarged section through the tire and a portion of the main body 'o thewheelshowlng the separator or filler and Fig.' 8 is .a'view similar to Fig. 2, the section' being taken adjacent to one of thezb'olts whichvbinds or -fastens' the 5.5 tire to the f wheel proper. A 4

'Referring to the drawing, it will be noticed if nal circularsteplped surface 1'3 corresponding v 1'renoncent?BRYANT;orcnIcAcorILLINOIS; f

I Patented yamies;iena,l v

-' serial' isiqrlaaea.

r1'.4 Atireizis ls'oiprvide Wuhan-inter, f c, `fito., to but of slight y j -reater diameter tha' nthe surface `1l of thew eelproper, Whereby'when' einzending'y 'completely around l l,the wheel f The tire 12is he'atedand then' placed concen" tric :to "the wheeler body 1Q,f and during this conditionof' the tire molten had," or othe'f fannular space between the tire and wheel. As the A lead or 'other metalcools and Contracts the tire also vcorrespondingly contracts .rso that a perfect fit is secured' between the parts'when all are cooled. 4This metalsepaj rator or filler is notintended tof act as av 7 '5 binder to hold the tire in place, the latter be-fV ing held. in position by a plurality of bolts 15 passing through holes in the wheel, se arator, and tire, as is clearly illustratedin' jg. 3., Molten lead'has the roperty of retaining its s0 heat for a .consideralhle period of time,'and. "for that reason it willreadily flow into the re -stricted and narrow recess or space between the same.y g5

Lead and some other metals possess the pro erty `of not transmitting or responding rea ily to sound vibrations directed against them. In other words, they may be called non-resounding, non-resonant, or 'non-vibratory. Owing to this property of the metal separator it acts as a sound insulator, deadener, or absorber, whereby the noise and sound of one part of the wheel,`such as the ,rim, is not transmitted to any applreciable extent through the separatorto t e main body'or center of the wheel-and to the car proper. The paper inserts or separators whlch have heretofore been used for this purposearefound to be unsatisfactory and un# reliable when employed in heavy cars because they do not possess sufficient crushing strength. They, therefore, break away or are compressed in the operation of thecar so that they lose the very qualities for which they were used in the car wheels. Lead and a few other metals possess an adequate crushing. strength and also have the nonresonant or non-resounding quality desired. I have referred to the fac-t that' metals other than` lead might be used for this purpose, and, as an example, I might mention @fairest-isteria enea-liana with' the; 'wheel body` a`l spacer` leff between; the :two

fnonaesmrant* mtal, 14, "is poured "info the co er but '.'he use of this metal is of course i heatin thetire and )lacinU it concentric to PP f g l s objectionable Lbecause of its greater cost. The exact lshape and-forni ofthe'non-resonant metal se arator is quite,v immaterial7 and -althoughlhave shown one of a. specific shape, it is to' be understood that this invention isin no wise limited to such a construction..l -It will be apparent, therefore, that various changesl may be made4 in the car wheel stru cture shown and described without departure from thefess'ence or heart of 'my invention.

'1, Claim f. n 1. In a carywheel, the combinatlon ofa mein body or center, a tire, and a lead separator or filler between said main body'and tire, substantially as described.

2. The method of applying a non-resonant separator oriillerlbetween the main body of a car Wheelv and its tire, which consists 1n the main body of the Wheel, whereby a space or'cavity is left between them, pouring molten non-resonant metal into said space orl cavity whereby the same is filled therewith,

and allowing theparts to become cooled,

substantially as described.

3. The method of applying a non-resonant filler or separator bet-Ween the main body ol a car Wheel and its tire, which consists in 'heating the tire and placing it concentric to V the Wheel whereby a. space or' cavity is lel't v sace or cavity filling the same, and allowing t e parts to become cooled, substantially as described. l n GEORGE H. BRYANT.

Witnesses .WALTER M. FULLER, y L'. F. MCCREA.-

between them, pouring molten lead into said i' 

